题目内容

Helookedaroundandcaughtaman_______handintothepocketofa passenger:

A. put
B. tobeputting
C. toput
D. putting

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Whenyou arelearningtodrive,_______agoodteachermakesabig difference.

A. have
B. having
C. andhave
D. andhaving

Ifeltitagreathonor_______tospeaktoyou.

A. toask
B. asking
C. tobeasked
D. havingasked

MCS-51单片机与DAC0832的接口电路,常用的有直通方式、单缓冲方式和双缓冲方式。

A. 对
B. 错

ADC0809是几位模/数转换芯片?

A. 4
B. 16
C. 12
D. 8

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